add new tag alias correction helper

app/logical/cache.rb

@@ -40,7 +40,7 @@ class Cache
       start_time = Time.now
       value = MEMCACHE.get key.slice(0, 200)
       elapsed = Time.now - start_time
-      ActiveRecord::Base.logger.debug('MemCache Get (%0.6f)  %s' % [elapsed, key])
+      ActiveRecord::Base.logger.debug('MemCache Get (%0.6f)  %s -> %s' % [elapsed, key, value])
       if value.nil? and block_given? then
         value = yield
         MEMCACHE.set key, value, expiry
@@ -64,7 +64,7 @@ class Cache
       start_time = Time.now
       MEMCACHE.set key, value, expiry
       elapsed = Time.now - start_time
-      ActiveRecord::Base.logger.debug('MemCache Set (%0.6f)  %s' % [elapsed, key])
+      ActiveRecord::Base.logger.debug('MemCache Set (%0.6f)  %s -> %s' % [elapsed, key, value])
       value
     rescue MemCache::MemCacheError => err
       ActiveRecord::Base.logger.debug "MemCache Error: #{err.message}"

app/logical/tag_alias_correction.rb

@@ -0,0 +1,60 @@
+class TagAliasCorrection
+  attr_reader :tag_alias_id, :tag_alias, :hostname
+  delegate :antecedent_name, :consequent_name, :to => :tag_alias
+  
+  def initialize(tag_alias_id, hostname = Socket.gethostname)
+    @tag_alias_id = tag_alias_id
+    @tag_alias = TagAlias.find(tag_alias_id)
+    @hostname = hostname
+  end
+  
+  def to_json(options = {})
+    statistics_hash.to_json
+  end
+  
+  def statistics_hash
+    @statistics_hash ||= {
+      "antecedent_cache" => Cache.get("ta:" + Cache.sanitize(tag_alias.antecedent_name)),
+      "consequent_cache" => Cache.get("ta:" + Cache.sanitize(tag_alias.consequent_name)),
+      "antecedent_count" => Tag.find_by_name(tag_alias.antecedent_name).try(:post_count),
+      "consequent_count" => Tag.find_by_name(tag_alias.consequent_name).try(:post_count)
+    }
+  end
+  
+  def fill_hash!
+    Net::HTTP.start(hostname, 80) do |http|
+      http.request_get("/tag_aliases/#{tag_alias_id}/correction.json") do |res|
+        if res === Net::HTTPSuccess
+          json = JSON.parse(res.body)
+          statistics_hash["antecedent_cache"] = json["antecdent_cache"]
+          statistics_hash["consequent_cache"] = json["consequent_cache"]
+        end
+      end
+    end
+  end
+  
+  def each_server
+    Danbooru.config.all_server_hosts.each do |host|
+      other = TagAliasCorrection.new(tag_alias_id, host)
+      
+      if host != Socket.gethostname
+        other.fill_hash!
+      end
+      
+      yield other
+    end
+  end
+  
+  def clear_cache
+    tag_alias.clear_cache
+  end
+  
+  def fix!
+    clear_cache
+    Post.raw_tag_match(tag_alias.antecedent_name).each do |post|
+      post.save
+    end
+    tag_alias.antecedent_tag.fix_post_count if tag_alias.antecedent_tag
+    tag_alias.consequent_tag.fix_post_count if tag_alias.consequent_tag
+  end
+end